Bedroom Too Hot: A Fan Trick to Get Rid of the Heat

When heat builds up in a bedroom, pointing a fan toward an open window can help push hot air outside. Another opening, preferably on the opposite side, should let outdoor air replace the air being expelled. The method works only when the outdoor air is cooler than the room, such as in the evening, at night, or early in the morning. Positioning the fan a short distance from the window may improve the airflow.